. American telephone practice . (171 672 AMERICAN TELEPHOXE PRACTICE. and supervisory relays, and at the bottom of the view is the massof intermediate-to-answering cables, these cables lying in a runningbox on the floor, a portion of which is removed in this view for thepurpose of giving a better view of the cables themselves. The pile of multiple cable is always as many cables high as thereare horizontal rows of multiple jacks in the board. It is as manycables deep (front to rear) as there are panels in the switch-boardsection. From this it is evident that the skinners of the cables lead-ing
. American telephone practice . (171 672 AMERICAN TELEPHOXE PRACTICE. and supervisory relays, and at the bottom of the view is the massof intermediate-to-answering cables, these cables lying in a runningbox on the floor, a portion of which is removed in this view for thepurpose of giving a better view of the cables themselves. The pile of multiple cable is always as many cables high as thereare horizontal rows of multiple jacks in the board. It is as manycables deep (front to rear) as there are panels in the switch-boardsection. From this it is evident that the skinners of the cables lead-ing to the jacks in the first panel of each section are the shortest,those leading to the second panel a little longer and so on to thoseleading to the last panel, which are longest. This is well shown inFig. 486, which is a horizontal plan of the arrangement of jacks andcables in any one layer of the FIG. OF MULTIPLE CABLING. The forming up of the multiple cables and soldering them to theirjacks should always be done in the factory. In this way a vastamount of soldering may be accomplished before the apparatus isshipped to its destination, and in fact, the multiple jacks and multiplecables should all be tested out for transpositions, crosses, open wires,etc., before they leave the factory. The premises in which a largemultiple board is being installed is no place for the performance ofthe almost endless task of soldering the multiple cables. The workmay be done much more cheaply in the factory, where skilled laboris kept on hand for that purpose. It is therefore difficult to seewhy the practice still exists in some quarters in shipping the cablesin lengths to be cut up, formed and soldered on the premises in theinstallation. There is, moreover, no reason, if proper engineering TOP VIEW
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